From patchwork Fri May 12 07:53:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matti Vaittinen X-Patchwork-Id: 13238811 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 978FAC77B75 for ; Fri, 12 May 2023 07:54:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240373AbjELHyP (ORCPT ); Fri, 12 May 2023 03:54:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55562 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240374AbjELHx6 (ORCPT ); Fri, 12 May 2023 03:53:58 -0400 Received: from mail-lj1-x22e.google.com (mail-lj1-x22e.google.com [IPv6:2a00:1450:4864:20::22e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 25E64106FD; Fri, 12 May 2023 00:53:31 -0700 (PDT) Received: by mail-lj1-x22e.google.com with SMTP id 38308e7fff4ca-2ac80da3443so105629231fa.0; Fri, 12 May 2023 00:53:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1683878010; x=1686470010; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=r+fkvnw5qJK8Z9ZsEdDbVAibOHT/dgf1NL+n5A0kE4I=; b=P2el5kc09GmR4TELHXaLBONDRptaapBZXgUK3wEKkHoAPmtY9J2Qc1yr8KUR/4u5HP dnNBqWE0Pa2xaUIy4VJKr+uWa9bVH1jW7m4y/iSTDrl8wBvUhrRt5ePLB2XiEo61eS3l JKOtVi8/7GNe2+m7JMSU9goRVv+YB0MfD5rt9s7GRkkXloLQV1Hgj6paBsYn3Rk/d0nC ysMD5oN0iiYk111epYMERRDTCBq8z/fRrtOgCqssglyPDBHQmujNsmVViI18VbXN7AFl QAdKY8B16cLejoIMDgTb37tCb1/DZnJbcvBmOo0PCN7qZuJFUupLFsRrgddkzk4WFYnG a9lQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683878010; x=1686470010; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=r+fkvnw5qJK8Z9ZsEdDbVAibOHT/dgf1NL+n5A0kE4I=; b=M30ogO3oM2xaPhYftT+PQ8K80B0odPDxBNWsriN0gGAOPGTUZwiuvr3C3mGROQJwFX vIXLaejj7XoqrlV/TWsJiuotXG7lcB82eXIn2Lpcvou7o+7TMdzA3HuR+n2wNKF9wUnd KnTQk7xXnvdCUR6yGzdt6vo9fwoH9gPsbJqPLE5VR4Ij1BHaGzC7U1px7Azm+lLLMaQF SUuucEnWx6JARCEdgiqr67J0fU5JEKA7CxH7TM+Jd1YrEiwRdM/Iv8QkzYNIjdSYTrWe aiK6qctAvu8Ou8j6HMXXPrZRW5Vv0QEwgMgLQ2X+zGHORFR68zEeb3fVphlKXYCcCGQ3 06kw== X-Gm-Message-State: AC+VfDwi2Akw+8Twd7qYw/lO3JlLbGy+H4H02WlcuVSPGMkx4S1bLSsC wFgrnFArQd+GMGIXfldxDvY= X-Google-Smtp-Source: ACHHUZ51mCBU4t5K+r6iUvLR0RIkn1IL1WxlHPQYiauSW0ImZb7mE0vLP5zf4X8InqXz4KoUNWkjhA== X-Received: by 2002:a2e:7004:0:b0:2ac:8e5a:1054 with SMTP id l4-20020a2e7004000000b002ac8e5a1054mr3988058ljc.0.1683878009870; Fri, 12 May 2023 00:53:29 -0700 (PDT) Received: from fedora (62-78-225-252.bb.dnainternet.fi. [62.78.225.252]) by smtp.gmail.com with ESMTPSA id l18-20020a05651c10d200b002aa4713b925sm2691194ljn.21.2023.05.12.00.53.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 May 2023 00:53:29 -0700 (PDT) Date: Fri, 12 May 2023 10:53:25 +0300 From: Matti Vaittinen To: Matti Vaittinen , Matti Vaittinen Cc: Andy Shevchenko , Daniel Scally , Heikki Krogerus , Sakari Ailus , Greg Kroah-Hartman , "Rafael J. Wysocki" , Wolfram Sang , Matti Vaittinen , Jonathan Cameron , Lars-Peter Clausen , Akhil R , linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-iio@vger.kernel.org Subject: [PATCH v3 2/3] i2c: i2c-smbus: fwnode_irq_get_byname() return value fix Message-ID: References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org The fwnode_irq_get_byname() was changed to not return 0 upon failure so return value check can be adjusted to reflect the change. Reviewed-by: Sakari Ailus Reviewed-by: Andy Shevchenko Signed-off-by: Matti Vaittinen --- Depends on the mentioned return value change which is in patch 1/2. The return value change does also cause a functional change here. Eg. when IRQ mapping fails, the fwnode_irq_get_byname() no longer returns zero. This will cause also the probe here to return nonzero failure. I guess this is desired behaviour - but I would appreciate any confirmation. Please, see also previous discussion here: https://lore.kernel.org/all/fbd52f5f5253b382b8d7b3e8046134de29f965b8.1666710197.git.mazziesaccount@gmail.com/ Another suggestion has been to drop the check altogether. I am slightly reluctant on doing that unless it gets confirmed that is the "right thing to do". --- drivers/i2c/i2c-smbus.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i2c/i2c-smbus.c b/drivers/i2c/i2c-smbus.c index 138c3f5e0093..893fe7cd3e41 100644 --- a/drivers/i2c/i2c-smbus.c +++ b/drivers/i2c/i2c-smbus.c @@ -129,7 +129,7 @@ static int smbalert_probe(struct i2c_client *ara) } else { irq = fwnode_irq_get_byname(dev_fwnode(adapter->dev.parent), "smbus_alert"); - if (irq <= 0) + if (irq < 0) return irq; }